Composite roofing.



PATENTED 11m 31, 1907.

G. P. BISHOPRIG. COMPOSITE ROOFING. APPLICATION FILED MAR. 21,1907.

GEORGE FREDERICK BISHOPRIO, 0F TORONTO, ONTARIO, CANADA.

COMPOSITE ROOFING.

Specification of Letters Patent.

Patented Dec. 31, 1907.

Application-filed March 21, 1907. Serial lll'o. 863,716.

To all whom it may concern:

Be it known that I, GEORGE BISIIOPRIO, of the city of Toronto, in the county of :York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in (.omposite Roofing, of which the following is the specification.

' My invention relates to inn'n'ovements in composite roofing, and the object of the invention is. to devise a cheap, durable composite roofing, which may be placed directly on the rafters or joists without the necessity of sheathing the rafters with boards.

A further object is to enable the roofing to be firmly nailed in position and capable of resisting wind pressure. j ects I have constructed my roofing of an interlayer or backing of suitable material and outer and inner coatings for the same of adhesive material, such tar or asphalt mastic an outermost coating of sand or like granular material, and an innermost reinforcement of wooden strips held by adhesion to the adhesive coating and designed to form a fonddation whereby the roofing may be securely hold in position, the parts being otherwise arranged in detail as hereinafter more particularly explained.

Figure 1, is a pru'spective view of a portion of a roofing showing the application of my improved invention and the roofing exagger ated as to thickness. Fig. 2, is a still more exaggerated longitiulinal sectiontln'ough the roofing. Fig. 3, is a similar view to Fig. 1, showing a modified formation of the roofing. Fig. 4, is a longitudinal section of the modified for-in shown in Fig. 3, on a larger scale.

In the drawings like letters of reference indicate corresponding parts in each figure.

A is the hacking or foundation layer of my ('oliiposite roofing, which is preferably formed of paper. l

A is an outer eoatingol' tar, asphalt mastic or other suitable adhesive material and A is an inner coating of thesan'ie material.

A is an outer coating of sand, oro'ther granular or like material, which is superimposed upon the tar, asphalt mastic, or other adhesive surface while hot, and therefore, closely adheres to the same.

B are the series of strips located to the inside ofthe coating A and adhering thereto and forming a groundlayer for the roofin FREDERICK C are the joists or rafters of a roof and D are the nails, which are passed through the strips B and thereby securely hold the roofing in. position without any liability of t being stripped off by the wind. The strlps B are located at distances apart slightly greater than the width of the strip.

In Figs. 3 and 4, I show the outer roofing superimposed upon a base having the foundation strip or inner layer A*, the adheslve coatings A and A on each side of it and superimposed reinforcing strips B. These strips are designed to fit as will be readily understood, from these latter figures between the strips B and are necessarily alternately ar ranged as indicated, a slight distance being left between the strips B and B- in order to allow for any crookedness or defect in the strip.

, When the roofingis formed at the top section and lower section as described it is of great strength and suitable for decks and for uses for which the form in Figs. 1 and 2 would not be suitable.

What-1 claim as my invention is:

I 1. A composite roofing comprising an inner foundation layer, coatings of adhesive material on the upper and lower sides of the same, a superimposed coating of sand or the like on the upper adhesive coating and a bottom reinforcement secured to the lower coating, consisting of strips located at desired intervals apart as and for the purpose specified.

2. A. compositeroofing comprising a 'fo11n-' d ation layer comprising an inner foundation layer, coating of adhesive material on the upper and lower sides of the same, a superimposed coating of sand on the upper adhesive coating, a bottom reinforcement secured to the lower coating consisting of strips located at desired intervals apart and abase formed of a layer of suitable material having an upper and lower adhesive coating superiinposed. strips adhering to the upper coating and interlocking with the strips formthe reinforcement in thecornposite roofmg above as and for the purposespecified.

GEORGE ,rarnasicr Bisuoriuo- Witnesses: l

B. Born, A. Cnren'rono 

